J_Wills

Anyone figure it out? still can't solve this issue.

Yes, the tags can be written and read. what exactly you want to achieve? here's the recommendation: Before working with the Ultimaker S5, I've never really put my mind to NFC technology, so there are very probably some gaps in my understanding. Most of what I've learned, I've deduced from comparing the data from different spools and with different amounts of remaining material. The rest I could fill in reading the relevant python code of the firmware after ssh-ing into the printer. You can also check the demonstration code on github to understand even batter. The code is: https://gist.github.com/gandy92/a7eef12009045f7b3fc01d778c3b79a7 Hope it'll help!